Supporting disk

Abstract

Supporting disk for supporting a rotor of an open-end spinning machine, including a hub ring ( 1 ) and a supporting ring made of polymeric material secured to its outer circumference ( 2 ). The hub ring ( 1 ) is formed as a composite part, and is made of at least two different materials.

What is claimed is:  
     
       1. A supporting disk for supporting a rotor of an open-end spinning machine, comprising a hub ring and a supporting ring made of polymeric material secured to its outer circumference, wherein the hub ring ( 1 ) is formed as a composite part and is made of at least two different materials. 
     
     
       2. The supporting disk according to  claim 1 , wherein the hub ring ( 1 ) includes a metallic and a polymeric material which are connected to each other in a force-locking or a form-locking manner. 
     
     
       3. The supporting disk according to  claim 1 , wherein the hub ring ( 1 ) is formed by a disk made of metallic material ( 4 ) which is overlapped at least partially by at least one plastic element ( 5 ). 
     
     
       4. The supporting disk according to  claim 2 , wherein the hub ring ( 1 ) is formed by a disk made of metallic material ( 4 ) which is overlapped at least partially by at least one plastic element ( 5 ). 
     
     
       5. The supporting disk according to  claim 3 , wherein the disk is formed as an aluminum disk ( 4 ). 
     
     
       6. The supporting disk according to  claim 3 , wherein an outer circumference ( 6 ) of the plastic element ( 5 ) and an inner circumference ( 7 ) of the supporting ring ( 3 ) are connected to each other by force-locking or form-locking. 
     
     
       7. The supporting disk according to  claim 3 , wherein an outer circumference ( 6 ) of the plastic element ( 5 ) is furnished with at least one undercut ( 8 ) running around on the circumference side, into which at least one congruently formed projection ( 9 ) of the supporting ring engages. 
     
     
       8. The supporting disk according to  claim 5 , wherein the aluminum disk ( 4 ) is bordered by two flat end faces ( 10 ,  11 ). 
     
     
       9. The supporting disk according to  claim 5 , wherein the aluminum disk ( 4 ) is formed as a stamped part and the plastic element ( 5 ) is formed as an injection-molded part. 
     
     
       10. A supporting disk for supporting a rotor of an open-end spinning machine, comprising a hub ring and a supporting ring made of polymeric material secured to its outer circumference, wherein the hub ring ( 1 ) is formed as a composite part and is made of at least two different materials, the hub ring ( 1 ) is formed by a disk made of metallic material ( 4 ) which is overlapped at least partially by at least one plastic element ( 5 ) the disk is formed as an aluminum disk ( 4 ), and the aluminum disk ( 4 ) and the plastic element ( 5 ) have an essentially identical thermal expansion coefficient. 
     
     
       11. The supporting disk according to  claim 1 , wherein the supporting ring ( 3 ) has an essentially convex outer circumference ( 2 ), as seen in longitudinal cross section. 
     
     
       12. The supporting disk according to  claim 2 , wherein the supporting ring ( 3 ) has an essentially convex outer circumference ( 2 ), as seen in longitudinal cross section. 
     
     
       13. The supporting disk according to  claim 3 , wherein the supporting ring ( 3 ) has an essentially convex outer circumference ( 2 ), as seen in longitudinal cross section. 
     
     
       14. A supporting disk for supporting a rotor of an open-end spinning machine, comprising a hub ring and a supporting ring made of polymeric material secured to its outer circumference, wherein the hub ring ( 1 ) is formed as a composite part and is made of at least two different materials, the hub ring ( 1 ) is formed by a disk made of metallic material ( 4 ) which is overlapped at least partially by at least one plastic element ( 5 ) the disk is formed as an aluminum disk ( 4 ), and the aluminum disk ( 4 ) has a central opening ( 12 ) which is surrounded radially on the outside by first bores ( 14 ) uniformly distributed in the circumferential direction on a first reference circle ( 13 ), the first bores ( 14 ) directly surrounding the central opening contiguously in the radial direction, wherein through holes ( 17 ), uniformly distributed in the circumferential direction, are arranged on a second reference circle ( 15 ) in the region of the outer circumference ( 16 ) of the aluminum disk ( 14 ), second bores ( 19 ) being arranged in the radial direction essentially centrically, between the boundary ( 18 ) of the through holes ( 17 ) and the outer circumference ( 16 ) of the aluminum disk ( 4 ), and wherein the first bores ( 14 ) and the through holes ( 17 ) are each penetrated by the material of the plastic element and the second bores ( 19 ) are penetrated by the material of the supporting ring ( 3 ). 
     
     
       15. The supporting disk according to  claim 14  wherein the central opening ( 12 ) of the aluminum disk ( 4 ) is extended in the axial direction into the plastic element ( 5 ) on both sides. 
     
     
       16. A supporting disk for supporting a rotor of an open-end spinning machine, comprising: 
       a hub ring formed of a composite part made of at least two different materials, a first one of the different materials including at least one end face, and a second one of the different materials contacting the at least one end face of the first one of the different materials; and  
       a supporting ring made of polymeric material secured to an outer circumference of the hub ring.  
     
     
       17. The supporting disk according to  claim 16 , wherein the hub ring includes a metallic material and a polymeric material connected to each other in one of a force-locking manner and a form-locking manner. 
     
     
       18. The supporting disk according to  claim 16 , wherein the first one of the different materials and the second one of the different materials have an essentially identical thermal expansion coefficient. 
     
     
       19. The supporting disk according to  claim 17 , wherein an outer circumference of the polymeric material and an inner circumference of the supporting ring are connected to each other in one of a force-locking manner and a form-locking manner. 
     
     
       20. The supporting disk according to  claim 17 , wherein an outer circumference of the polymeric material is provided with at least one undercut, at least one congruently formed projection of the supporting ring engaging the at least one undercut.